1. pertaining to the brain.   ciliated   corrosive   cerebral   feasible   Hint Half-n-half Clue   2. necessary for the whole; complete, not fractional.   generic   concurrent   dynamic   integral   Half-n-half Clue   3. pertaining to the back (of an animal).   brittle   anthropoid   dorsal   centripetal   Half-n-half Clue   4. occurring at the same time.   inductive   brackish   concurrent   eccentric   Half-n-half Clue   5. heat-liberating.   inert   eugenic   calorific   implicit   Half-n-half Clue   6. pertaining to mental processes or knowing.   eccentric   integral   congenital   cognitive   Half-n-half Clue   7. of motive force or energetic.   eugenic   hybrid   feasible   dynamic   Half-n-half Clue